$11 Bubble, need help determining hand ranges and doing EV calculation

[Gavagai]

3-handed, blinds 100/200, $11 Pokerstars.

CO: 2285
Hero: 1500
SB: 5660
BB: 4055

My image is ok I think; I have been moderately aggressive recently, but have shown down strong hands nearly every time, and have been generally tight throughout. Have recently pushed with AK and AQ and shown. Firstly, I would like to ask what people think is a reasonable calling range for SB and BB if I push after a fold from CO? Was not really paying attention enough to know anything more than that neither player is overly loose.

Anyway, the CO did fold, and I pushed Kc5c. Now, I need some help with my EV calculation! (this is my main concern)

According to Pokerstove, K5s has 37.6% equity against the range: [22+,A8s+,QJs,JTs,A9o+,KJo+,QJo] (is this a good range?).

Supposing that this is their calling range, and that only one of them will call, is the following correct?:

There are 1326 hand combinations, and this range represents 198 of them, or 15%. Given that I have two opponents, do I just double this to get the chance of being called? If this right, then these are the possibilities:

(a) 70% of the time, I win 300

(b) 11.28% of the time I win 1650 (it is actually either 1700 or 1600 depending on which blind calls)

(c) 18.72% I lose 1500

What is the expected value then? Is this way of working it out correct:

((70*300)+(11.28*1650)+(18.72*-1500))/100 = 381.3072 ?

Finally, is this a good or bad push?

Thanks,

Gavagai.